Looking for advice on adding another bedroom or improving current

[Matt Taschner]

I am closing on a property on the 19th.  The house is currently laid out as a 4 bed 3 bath.  There is an office that has a closet and could convert into a 5th bedroom with the addition of a window.  For layout aesthetics, I was going to enlarge one bedroom into that office.  The part that I am struggling with is the closest comp found on an appraisal came in on the high side of 209k.  I am planning on listing the house at $249k and don't want to fall short on the appraisal hence having to drop the price.  Should I keep the current config of a 4 bd 3 bath and expand the bedroom or add another bedroom to add value to the appraisal, sacrificing room size?  Thanks in advance.